One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,7,8,6)(9,10,14,11)(12,13,15,16)(17,18,23,26)(19,24,28,29)(20,27,30,32)(21,25,22,31)(2,5)(6,7)(9,11,14,10)(12,16,15,13)(17,19,23,28)(18,24,26,29)(20,25,30,31)(21,27,22,32)(9,12,13,11,14,15,16,10)(17,20,22,29,23,30,21,24)(18,19,25,27,26,28,31,32)(1,3,4,8)(2,6,5,7)(17,21,23,22)(18,25,26,31)(19,27,28,32)(20,24,30,29)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.